Cita APA (7a ed.)

Ball, J. C. H. (1967). People and events in history. Univ. of London Press.

Cita Chicago Style (17a ed.)

Ball, J. C. H. People and Events in History. London: Univ. of London Press, 1967.

Cita MLA (9a ed.)

Ball, J. C. H. People and Events in History. Univ. of London Press, 1967.